为什么 IDirect3DDevice9::Release 会返回 S_FALSE？
当我为 Direct3D9 设备调用 Release 方法时，它返回 S_FALSE，但我找不到任何解释为什么会返回该值的信息。
据我所知，S_FALSE 意味着它已经成功，但不必执行任何操作，但我只释放一次。
我也不认为该方法确实成功，因为即使在窗口被销毁并释放设备之后，我仍然保留全屏 DirectX 窗口。
When I call the Release method for my Direct3D9 device it returns S_FALSE but I can't find anything that explains why this value would be returned.
From what I can gather, S_FALSE means that it has succeeded but hasn't had to do anything but I only release once.
I also don't think the method does succeed as I am left with a fullscreen DirectX window even after the window has been destroyed and the device released.
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IUnknown::Release不会像您假设的那样返回HRESULT，而是返回一个ULONG，指示（此 COM 对象的）未完成的引用计数。IUnknown::Releasedoes not return aHRESULTas you assumed, it instead returns aULONGindicating outstanding reference count (of this COM object).